Pinning a b5 sopmod. Also sopmod vs imod

[n4p226r 105]

Has anyone pinned a b5 sopmod? I'm debating of sticking with the vltor imod I have on my other rifle or going with the sopmod this time around. The imod is real easy to pin. Wondering what you think about sopmod vs imod too.

[High Exposure 5,664]

I have an LMT SOPMOD and a B5 Bravo on work guns, and 2 B5 Bravo stocks on personal guns. I prefer them over the VLTOR IMOD.

 

That being said, I wouldn't not put an IMOD on a gun - They are nice stocks.

 

As far as pinning, the Bravo is easily, drill through the stock into the receiver extension and pin.

 

The SOPMOD, I dont know. Looks like it would be difficult.

[n4p226r 105]

Are the sopmod big? Some pictures they look huge.

 

Since you have the LMT and a bravo do you prefer one over the other?

[n4p226r 105]

I wonder if pinning the lever in place would be sufficient to properly secure it. You wouldn't even need to drill the buffer tube and with the thickness of the material it should hold.

[Displaced Texan 11,752]

I have drilled through the release pin mechanism, and pinned that with a roll pin. Doesn't mess up the stock visibly, nor does it drill into the RE.

It prevents the mechanism from working, effectively latching the stock in place.

[n4p226r 105]

Did you drill behind the lever? Have any pictures? Did you remove the spring first?

I haven't taken the sopmod apart but I'm guessing it's similar to the m4 stock.

 

http://www.brownells.com/.aspx/pid=0/sid=809/schematicsdetail/AR_15_Sliding_Buttstock_Assembly?avad=avant&aid=41227&cm_mmc=affiliate-_-Itwine-_-Avantlink-_-Custom+Link

[Displaced Texan 11,752]

I'm traveling at the moment so can't take pics.

I drilled through the plunger mechanism and pinned it in place. I think I found the procedure in Calguns.

[n4p226r 105]

thanks.  ill check calguns.   it would be possible to machine a new mechanism inside that wouldn't allow the lever to work, but its a lot more work than just pinning it.  

[n4p226r 105]

I assume this is what you did.

 

http://img.photobucket.com/albums/v217/wsaraceni/496DE255-558C-4656-8D9D-6F161E529421_zpsc73q6rfa.png

[Displaced Texan 11,752]

Pretty much.

[n4p226r 105]

That roll pin to remove the lever is pretty impossible to remove.

[Displaced Texan 11,752]

What are you using to get it out?

[n4p226r 105]

A roll pin punch. I need to get my punch with the little nub on it tomorrow.

[Displaced Texan 11,752]

Punch and a small hammer did the trick for me

[n4p226r 105]

Did you remove the spring or just drill through it

[Displaced Texan 11,752]

I removed it.

[n4p226r 105]

Ok. I'll tackle this project this weekend. Thanks for your help

[n4p226r 105]

So much easier with the right tools

[Displaced Texan 11,752]

Lol usually is!! Glad you sorted it out.

[n4p226r 105]

Ordered a few drill bits and some 5/64 x .5" stainless roll pins

[High Exposure 5,664]

Oh, and FYI:

https://dsgarms.com/ktb5bravo-blk?utm_source=newsletter&utm_medium=email&utm_content=B5%20Milspec%20Bravo%20Buttstock%20Kit%20-%20Black&utm_campaign=5/6%20Retail%20-%20Armalite%20M15

Kit inlcudes a B5 BRAVO stock in black with milspec buffer tube, buffer spring, standard weight carbine buffer, lock ring and end plate.

B5 Bravo Stock kit for $75 (sign in for full discount).

[n4p226r 105]

I figured I would update this in case people look in the future.

 

Remove the internal spring and drill and pin the location in this picture

 

 

100% invisible when you put the lever back on.

 

Drill bit is mc-master Carr part number 3146A113

 

 

Roll pin is mc-master Carr part number 92373A126

[n4p226r 105]

I figured I would update this in case people look in the future.

 

Remove the internal spring and drill and pin the location in this picture

 

 

Drill bit is mc-master Carr part number 3146A113

 

 

Roll pin is mc-master Carr part number 92373A126

[High Exposure 5,664]

Nicely done!

[n4p226r 105]

Thanks. In a few weeks I get to do it all over again.

[050417Jl 2]

On 6/5/2016 at 2:26 PM, n4p226r said:

I figured I would update this in case people look in the future.

 

Remove the internal spring and drill and pin the location in this picture

 

 

100% invisible when you put the lever back on.

 

Drill bit is mc-master Carr part number 3146A113

 

 

Roll pin is mc-master Carr part number 92373A126

I’m new to a lot of this, and was wondering if you could help break down what you did to drill through the internal stock pin? With my current knowledge I’d most likely ruin the stock and drill around it, since it’s metal. I know this is years later but I have to give it a shot.

[050417Jl 2]

On 4/25/2016 at 8:43 AM, Displaced Texan said:

I have drilled through the release pin mechanism, and pinned that with a roll pin. Doesn't mess up the stock visibly, nor does it drill into the RE.

It prevents the mechanism from working, effectively latching the stock in place.

Hello, I’m attempting to pin a SOPMOD myself and I’m having some trouble. Would you be able to share exactly how you would drill through the release pin mechanism? I know the plunger inside is round and if I attempted to drill through as is, I’m assuming the bit would slide off to the side before starting to bite into the pin. Not entirely sure how to end up with the results that the other gentleman had posted before. I know I’m 7 years late to the party but I was hoping you could help me. Thank you.

[Displaced Texan 11,752]

It’s been a long time, and I since moved to Texas where I unpinned all that crap….

 

That being said, I think I used a small drill to make a hole at the spot I wanted. Made sure to dimple the plunger mechanism inside. 
Then, I removed the plunger, slowly drilled the rest of the way through it. 
Once I put everything back together I tapped a roll pin in.

 

I’m out of country on vacation at the moment, but when I get back, I can give you a visual of how I did it. 

[Displaced Texan 11,752]

On 5/25/2023 at 12:43 AM, 050417Jl said:

Hello, I’m attempting to pin a SOPMOD myself and I’m having some trouble. Would you be able to share exactly how you would drill through the release pin mechanism? I know the plunger inside is round and if I attempted to drill through as is, I’m assuming the bit would slide off to the side before starting to bite into the pin. Not entirely sure how to end up with the results that the other gentleman had posted before. I know I’m 7 years late to the party but I was hoping you could help me. Thank you.

Hey, sorry I kind of forgot about this. 
 

My stock wasn’t a Sopmod, it’s a Vltor, but I imagine it will be similar. 
 

Here’s where I drilled on mine. I used a 4-40 set screw to prevent the latch from moving. You could use some JB Weld to putty over the screw, or for that matter, you could just leave it be. I believe as long as it’s not readily adjustable without using a tool, you’re gtg.